Zarezin Ivan
From Yekaterinburg, Russia
EMA: 15020003
Internal rating (RR)
Rating date July 12, 2025 (latest changes July 12, 2025).
66 place (509.12).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.35
p1 = (401.87 * 4.60 * 0.71 + 873.42 * 3.65 * 1 + 808.51 * 2.80 * 1 + 0 + 0) / (4.60 * 0.71 + 3.65 * 1 + 2.80 * 1 + 1 + 1) = 577.0600675881791
p2 = (873.42 * 3.65 * 1 + 808.51 * 2.80 * 1 + 401.87 * 4.60 * 0.71) / max_coefficients = 441.1889250814332
score = 577.0600675881791 * 0.5 + 441.1889250814332 * 0.5 = 509.12449633480617
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-07-12 | 65 -> 66 | 508.79 -> 509.12 |
X Russian Championship: 86% -> 71% |
| 2025-07-03 | 66 -> 65 | 508.79 | |
| 2025-06-15 | 58 -> 66 | 515.45 -> 508.79 | |
| 2025-06-11 | 53 -> 58 | 548.16 -> 515.45 |
Money can not buy tenpai: 14% -> 0% |
| 2025-06-08 | 52 -> 53 | 548.16 | |
| 2025-05-12 | 53 -> 52 | 540.95 -> 548.16 |
X Russian Championship: 100% -> 86% |
| 2025-05-03 | 50 -> 53 | 540.95 | |
| 2025-04-11 | 50 | 548.80 -> 540.95 |
Money can not buy tenpai: 29% -> 14% |
| 2025-03-30 | 51 -> 50 | 548.80 | |
| 2025-03-02 | 49 -> 51 | 548.80 |